Rewinding mechanism for pneumatic pianos.



A. NORDEENQ REWINDING MEGHANISM FOR PNEUMATIC PIANOS.

APPLIGATION I'ILED DEG.16,1907.

Patented June 15, 1909.

3 SHEETS-SHEET 1.

IN VEN TOR.

August Nordeen Y nnuuunnnuDW WITNESSES: 4

A TTORNE Y.

A. NORDEEN. REWINDING MECHANISM FOR PNEUMATIC PIANOS.

APPLICATION FILED 1130.16.1907.

PatentedJune 15, 1969.

3 SHEETS-SHEET 2.

DDDDUUDDDDM INVENTOR. August Novel een. y

WITNESSES: Wm M ATTORNEY.

ms Hollis PlrARs-cm, wnsumcnn. n. c

A. NORDEEN.

REWINDING MECHANISM FOR PNEUMATIC PIANOS.

APPL'IUATION FILED D110l6,1907.

Patented June 15, 1909.

3 SHEETS-BHEET 3.

, 4 INVENTOR.

August Norcleen. BY

WITNESSES: 7 MM m ATTORNEY.

@TATE AUGUST NORDEEN, OF NEWCASTLE, INDIATIA, ASSIGNOR 'lO RAY PIANO COMPANY, OF NEW- CASTLE, INDIANA, A OOPARTNERSHIP.

REWINDING MECHANISIJI FOR PNEUMATIC PIANOS.

Specification of Letters Patent.

Patented. June Application filed December 18, 1907. Serial No. 06,636.

1 (all ilzliom it may concern:

Be it known that l, Arfsnsr LTORDEEN, of Newcastle, county of Henry, and Fltate of lndiana, have invented a certain new and useful Rewinding Mechanism for Pneumatic Pianos; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

The object of this invention is to improve the construction of the mechanism in pneumatic pianos for rcwinding the perforated music sheets. This part of the mechanism of pneumatic pianos has been heretofore a source of considerable difficulty because of the use of purely mechanical, means for rewinding the sheet of music.

The chief feature of my invention consists in using pneumatically operative means for said purpose, there being provided pneumatically operative means for throwing the winding mechanism out of gear and pneumatically operative means for throwing the rewinding means into operation and releasing a brake thereon, the whole being controlled by one pneumatic switch lever.

The nature of this invention will be understood from the accompanying drawings and the following description and claim.

in the drawings Figure l is a front elevation of that portion of a pneumatic piano relating to my invention, the parts being shown in a normal or winding position, and parts being broken away. Fig. 2 is the same as l with the parts in position to rewind. Fig. 3 is a central longitudinal section of the spindle for actuating the music roll and rcwinding the sheet of music, the parts being in an inoperative position. Fig. t is a vertical section on the line 6-6 of 2, that is being the same as Fig. with the viuding mechanism out of gear. Fig. 7 is a plan view of the switch mechanism, parts being in horizontal section on the line '77 of Fig. 1. Fig. 8 is a vertical section on the line 88 of Fig. 7, showing the pneumatic valve in its normal winding position. Fig. 9 is the same showing the valve in an unwinding position.

There is a base board lOhaving a pair of parallel uprights 11, only one of which is shown, between which a tracker board 12 extends. A. winding drum 1% is mounted below the tracker board and between the rprights 11, and has a spindle i l having bearing in and projecting through the upright 11, as shown. and on its outer end. there i mounted an internal gear wheel ove the tracker board a roll 16 is mounted t c; :ries the music sheet, said roll having i end detachably mounted in a rewinding shaft 18 that extends through and has caring in. the upright 11 and a downwardly projecting arm 19 from a bracket 20. On its outer eno I. carries a brake wheel 21 which is engaged by a brake shoe 22 carried by a spring secured on the bracket and projecting laterally therefrom.

ll'hile the music is being played. the music sheet. winds upon the winding roll from the .Lnsic roll l6. This winding movement is caused by the actuating bellows 525 operating through a crank-shaft 26 mounted in beari s 2? and, 2S and having on its inner end a pi ion 99 tha meshes with a pinion 30, that is mounted on a spindle 31 carried by a bifurcated arr 32 mounted in bearing securcl to the base board 10. A spring 3st 'ainst said arm and tends to force ,n into engagement with the driv- There is a pinion on the spindle 31 that engages the internal gear 15, and in this way power is transmitted from driving pinion 29 to the winding roll.

The winding" mechanism just described is thrown out of operation by the art. sc

being elevated to the position shown (3 so as to disengage the pinions 29 L0. his is caused by a pin lO, which operates rertically through the base board rnd-er the influence of bellows %ll secured under side of said board, and which is actuated by the air being exhausted. therefrom through a tube 4'2 leading from a port 43 in the valve plate 41%, shown in Figs. 8 ant. and which is secured upon the base board it) near one end. There is another port 45 in said plate is that is in constantcomnninication with a passage it; tron an OX- haust air chest 4.7. A sliding valve 48 operates on the plate alt so that when it is in the position shown in Fig. 9, it will throw the two ports 43 and 4.5 into communication with each other, and the air will be exhausted from the bellows t1, and thus the winding mechanism be thrown out of operation. Vv hen the valve is in the position shown in Fig. 8, the ports i3 and are not in communication, and, therefore, the bellows t1 assumes its normal and expanded position, and the spring 34: moves and holds the pinion 30 in engagement with the driving pinion 29, which again puts the winding mechanism in operation.

The valve 48 is oscillated or actuated by a hand lever 49 fulcrumed at 50 upon the base plate 10. The rewinding shaft 18 is driven by a spiral wire cable from the crank-shaft 26, said cable passing about a large sheave wheel on said shaft 26 and a small sheave wheel 57 on the rewinding shaft 18. The wheel 57 is loosely mounted on said shaft 18 between a fixed collar 58 and a fixed enlargement 59 of the shaft 18. hen music is being played, and the sheet of music is being wound on the winding roll 13, the small wheel 57 runs idle. lVhen, however, it is desired to rewind, and the winding mechanism below is thrown out of operation, it is necessary to throw the re winding mechanism above into operation simultaneously. This is done by the following mechanism: The enlarged portion 59 of the shaft 18 is hollow at its outer end for a longitudinally reciprocal clutch rod 60. It is normally pushed outwardly by a spring (31, and on its inner end carries a pin 62 that projects upwardly through a slot 63 in said tubular portion 59, so that said pin 62 serves as a stop to limit the outward movement of the rod 60, and the spring 61 serves to hold the pin 62 out of engagement with a pin 64 extending laterally from the side of the wheel 57 while music is being played and the rewinding mechanism is not in operation. This is set in operation by the rod beingmoved inwardly from the position shown in Fig. l to that shown in Fig. 2 to cause the pins 62 and ea to interlock. Then the wheel 57 will revolve the part 59 and the shaft 18. The rod 60 is forced inwardly by a lever 67, which is fulcrumed at 68 on r the outer end of an arm 69 from the bracket 20. Said lever 67 is actuated, or turned to the left from the position shown 111 Fig. 1, by a connecting rod 70 and the bellows 71,

I which are secured to the side of the upright l1, and from which the air is exhausted through atube 72 that extends to the 'port 4C3 on the pneumatic valve mechanism, as appears in Figs. 8 and 9. Therefore, when the valve l8 is operated to the position shown in Fig. 9, the bellows 71 will be eX- hausted and actuated as well as the bellows lt), the two simultaneously, and hence, the rewinding mechanism will be thrown into operation at the same instant the winding mechanism is thrown out of operation, and this condition of the mechanism will remain as long as the valve is in the position shown in Fig. 8. At the same time that the rewinding mechanism is thrown into operation, the brake 22 is released from the wheel the lever 67 that engages the lower side of the spring 23 and elevates it and the brake shoe 22. When the valve is moved to the position shown in Fig. 8, the parts are returned by the springs 34, 61v and 23 to the position shown in Fig. 3, which is the winding position and the usual position.

lVhat I claim as my invention and desire to secure by Letters Patent is:

A pneumatic piano including a shaft for l rewinding a sheet of music that has a tubular end portion, a driving wheel mounted loosely on said shaft with a laterally projecting pin therefrom, a clutch rod mounted slidingly in the hollow portion of said shaft and carrying a pin adapted when the rod is moved inwardly to interlock with the pin on said wheel, a spring for normally holding said rod outwardly, and pneumatic means for moving said rod into the clutching position.

In witness whereof, I have hereunto allixed my signature in the presence of the witnesses herein named.

AUGUST NORDEEN.

lVitnesses D. XV. :KINSEY,

FRED. SAINT.

21 by a projection Tet on the upper end of" 

